http://www.jamestowndistributors.com/userportal/show_product.do?pid=1268&familyName=Smiths+Warm+CPES+Epoxy
Try using a penetrating epoxy first then the fix you mentioned. Should make it pretty strong.
Wood rot is a big concern on any truck camper I have seen. Why they would use wood in that area remains a mystery to me. And just putting on some epoxy first to seal that wood would give it many more years of service.
I like the alaskan campers, but then I see how much untreated wood they have and I say no thanks!
Coming from a nautical background I am very much aware of the effect water has on wood, and add salt to it from winter and its a real problem.